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<?xml version="1.0" encoding="UTF-8"?>
<!--
xml2html.xsl - transform Bison XML Report into XHTML.
Copyright (C) 2007-2015 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Written by Wojciech Polak <polak@gnu.org>.
-->
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:bison="http://www.gnu.org/software/bison/">
<xsl:import href="bison.xsl"/>
<xsl:output method="xml" encoding="UTF-8"
doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN"
doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
indent="yes"/>
<xsl:template match="/">
<html>
<head>
<title>
<xsl:value-of select="bison-xml-report/filename"/>
<xsl:text> - GNU Bison XML Automaton Report</xsl:text>
</title>
<style type="text/css"><![CDATA[
body {
font-family: "Nimbus Sans L", Arial, sans-serif;
font-size: 9pt;
}
a:link {
color: #1f00ff;
text-decoration: none;
}
a:visited {
color: #1f00ff;
text-decoration: none;
}
a:hover {
color: red;
}
#menu a {
text-decoration: underline;
}
.i {
font-style: italic;
}
.pre {
font-family: monospace;
white-space: pre;
}
ol.decimal {
list-style-type: decimal;
}
ol.lower-alpha {
list-style-type: lower-alpha;
}
.point {
color: #cc0000;
}
#footer {
margin-top: 3.5em;
font-size: 7pt;
}
]]></style>
</head>
<body>
<xsl:apply-templates select="bison-xml-report"/>
<xsl:text> </xsl:text>
<div id="footer"><hr />This document was generated using
<a href="http://www.gnu.org/software/bison/" title="GNU Bison">
GNU Bison <xsl:value-of select="/bison-xml-report/@version"/></a>
XML Automaton Report.<br />
<!-- default copying notice -->
Verbatim copying and distribution of this entire page is
permitted in any medium, provided this notice is preserved.</div>
</body>
</html>
</xsl:template>
<xsl:template match="bison-xml-report">
<h1>GNU Bison XML Automaton Report</h1>
<p>
input grammar: <span class="i"><xsl:value-of select="filename"/></span>
</p>
<xsl:text> </xsl:text>
<h3>Table of Contents</h3>
<ul id="menu">
<li>
<a href="#reductions">Reductions</a>
<ul class="lower-alpha">
<li><a href="#nonterminals_useless_in_grammar">Nonterminals useless in grammar</a></li>
<li><a href="#terminals_unused_in_grammar">Terminals unused in grammar</a></li>
<li><a href="#rules_useless_in_grammar">Rules useless in grammar</a></li>
<xsl:if test="grammar/rules/rule[@usefulness='useless-in-parser']">
<li><a href="#rules_useless_in_parser">Rules useless in parser due to conflicts</a></li>
</xsl:if>
</ul>
</li>
<li><a href="#conflicts">Conflicts</a></li>
<li>
<a href="#grammar">Grammar</a>
<ul class="lower-alpha">
<li><a href="#grammar">Itemset</a></li>
<li><a href="#terminals">Terminal symbols</a></li>
<li><a href="#nonterminals">Nonterminal symbols</a></li>
</ul>
</li>
<li><a href="#automaton">Automaton</a></li>
</ul>
<xsl:apply-templates select="grammar" mode="reductions"/>
<xsl:apply-templates select="grammar" mode="useless-in-parser"/>
<xsl:apply-templates select="automaton" mode="conflicts"/>
<xsl:apply-templates select="grammar"/>
<xsl:apply-templates select="automaton"/>
</xsl:template>
<xsl:template match="grammar" mode="reductions">
<h2>
<a name="reductions"/>
<xsl:text> Reductions</xsl:text>
</h2>
<xsl:apply-templates select="nonterminals" mode="useless-in-grammar"/>
<xsl:apply-templates select="terminals" mode="unused-in-grammar"/>
<xsl:apply-templates select="rules" mode="useless-in-grammar"/>
</xsl:template>
<xsl:template match="nonterminals" mode="useless-in-grammar">
<h3>
<a name="nonterminals_useless_in_grammar"/>
<xsl:text> Nonterminals useless in grammar</xsl:text>
</h3>
<xsl:text> </xsl:text>
<xsl:if test="nonterminal[@usefulness='useless-in-grammar']">
<p class="pre">
<xsl:for-each select="nonterminal[@usefulness='useless-in-grammar']">
<xsl:text> </xsl:text>
<xsl:value-of select="@name"/>
<xsl:text> </xsl:text>
</xsl:for-each>
<xsl:text> </xsl:text>
</p>
</xsl:if>
</xsl:template>
<xsl:template match="terminals" mode="unused-in-grammar">
<h3>
<a name="terminals_unused_in_grammar"/>
<xsl:text> Terminals unused in grammar</xsl:text>
</h3>
<xsl:text> </xsl:text>
<xsl:if test="terminal[@usefulness='unused-in-grammar']">
<p class="pre">
<xsl:for-each select="terminal[@usefulness='unused-in-grammar']">
<xsl:sort select="@symbol-number" data-type="number"/>
<xsl:text> </xsl:text>
<xsl:value-of select="@name"/>
<xsl:text> </xsl:text>
</xsl:for-each>
<xsl:text> </xsl:text>
</p>
</xsl:if>
</xsl:template>
<xsl:template match="rules" mode="useless-in-grammar">
<h3>
<a name="rules_useless_in_grammar"/>
<xsl:text> Rules useless in grammar</xsl:text>
</h3>
<xsl:text> </xsl:text>
<xsl:variable name="set" select="rule[@usefulness='useless-in-grammar']"/>
<xsl:if test="$set">
<p class="pre">
<xsl:call-template name="style-rule-set">
<xsl:with-param name="rule-set" select="$set"/>
</xsl:call-template>
<xsl:text> </xsl:text>
</p>
</xsl:if>
</xsl:template>
<xsl:template match="grammar" mode="useless-in-parser">
<xsl:variable
name="set" select="rules/rule[@usefulness='useless-in-parser']"
/>
<xsl:if test="$set">
<h2>
<a name="rules_useless_in_parser"/>
<xsl:text> Rules useless in parser due to conflicts</xsl:text>
</h2>
<xsl:text> </xsl:text>
<p class="pre">
<xsl:call-template name="style-rule-set">
<xsl:with-param name="rule-set" select="$set"/>
</xsl:call-template>
</p>
<xsl:text> </xsl:text>
</xsl:if>
</xsl:template>
<xsl:template match="grammar">
<h2>
<a name="grammar"/>
<xsl:text> Grammar</xsl:text>
</h2>
<xsl:text> </xsl:text>
<p class="pre">
<xsl:call-template name="style-rule-set">
<xsl:with-param
name="rule-set" select="rules/rule[@usefulness!='useless-in-grammar']"
/>
</xsl:call-template>
</p>
<xsl:text> </xsl:text>
<xsl:apply-templates select="terminals"/>
<xsl:apply-templates select="nonterminals"/>
</xsl:template>
<xsl:template name="style-rule-set">
<xsl:param name="rule-set"/>
<xsl:for-each select="$rule-set">
<xsl:apply-templates select=".">
<xsl:with-param name="pad" select="'3'"/>
<xsl:with-param name="prev-lhs">
<xsl:if test="position()>1">
<xsl:variable name="position" select="position()"/>
<xsl:value-of select="$rule-set[$position - 1]/lhs"/>
</xsl:if>
</xsl:with-param>
</xsl:apply-templates>
</xsl:for-each>
</xsl:template>
<xsl:template match="automaton" mode="conflicts">
<h2>
<a name="conflicts"/>
<xsl:text> Conflicts</xsl:text>
</h2>
<xsl:text> </xsl:text>
<xsl:variable name="conflict-report">
<xsl:apply-templates select="state" mode="conflicts"/>
</xsl:variable>
<xsl:if test="string-length($conflict-report) != 0">
<p class="pre">
<xsl:copy-of select="$conflict-report"/>
<xsl:text> </xsl:text>
</p>
</xsl:if>
</xsl:template>
<xsl:template match="state" mode="conflicts">
<xsl:variable name="conflict-counts">
<xsl:apply-templates select="." mode="bison:count-conflicts" />
</xsl:variable>
<xsl:variable
name="sr-count" select="substring-before($conflict-counts, ',')"
/>
<xsl:variable
name="rr-count" select="substring-after($conflict-counts, ',')"
/>
<xsl:if test="$sr-count > 0 or $rr-count > 0">
<a>
<xsl:attribute name="href">
<xsl:value-of select="concat('#state_', @number)"/>
</xsl:attribute>
<xsl:value-of select="concat('State ', @number)"/>
</a>
<xsl:text> conflicts:</xsl:text>
<xsl:if test="$sr-count > 0">
<xsl:value-of select="concat(' ', $sr-count, ' shift/reduce')"/>
<xsl:if test="$rr-count > 0">
<xsl:value-of select="(',')"/>
</xsl:if>
</xsl:if>
<xsl:if test="$rr-count > 0">
<xsl:value-of select="concat(' ', $rr-count, ' reduce/reduce')"/>
</xsl:if>
<xsl:value-of select="' '"/>
</xsl:if>
</xsl:template>
<xsl:template match="grammar/terminals">
<h3>
<a name="terminals"/>
<xsl:text> Terminals, with rules where they appear</xsl:text>
</h3>
<xsl:text> </xsl:text>
<p class="pre">
<xsl:apply-templates select="terminal"/>
</p>
<xsl:text> </xsl:text>
</xsl:template>
<xsl:template match="grammar/nonterminals">
<h3>
<a name="nonterminals"/>
<xsl:text> Nonterminals, with rules where they appear</xsl:text>
</h3>
<xsl:text> </xsl:text>
<p class="pre">
<xsl:apply-templates
select="nonterminal[@usefulness!='useless-in-grammar']"
/>
</p>
</xsl:template>
<xsl:template match="terminal">
<b><xsl:value-of select="@name"/></b>
<xsl:value-of select="concat(' (', @token-number, ')')"/>
<xsl:for-each select="key('bison:ruleByRhs', @name)">
<xsl:apply-templates select="." mode="number-link"/>
</xsl:for-each>
<xsl:text> </xsl:text>
</xsl:template>
<xsl:template match="nonterminal">
<b><xsl:value-of select="@name"/></b>
<xsl:value-of select="concat(' (', @symbol-number, ')')"/>
<xsl:text> </xsl:text>
<xsl:if test="key('bison:ruleByLhs', @name)">
<xsl:text>on left:</xsl:text>
<xsl:for-each select="key('bison:ruleByLhs', @name)">
<xsl:apply-templates select="." mode="number-link"/>
</xsl:for-each>
</xsl:if>
<xsl:if test="key('bison:ruleByRhs', @name)">
<xsl:if test="key('bison:ruleByLhs', @name)">
<xsl:text> </xsl:text>
</xsl:if>
<xsl:text>on right:</xsl:text>
<xsl:for-each select="key('bison:ruleByRhs', @name)">
<xsl:apply-templates select="." mode="number-link"/>
</xsl:for-each>
</xsl:if>
<xsl:text> </xsl:text>
</xsl:template>
<xsl:template match="rule" mode="number-link">
<xsl:text> </xsl:text>
<a>
<xsl:attribute name="href">
<xsl:value-of select="concat('#rule_', @number)"/>
</xsl:attribute>
<xsl:value-of select="@number"/>
</a>
</xsl:template>
<xsl:template match="automaton">
<h2>
<a name="automaton"/>
<xsl:text> Automaton</xsl:text>
</h2>
<xsl:apply-templates select="state">
<xsl:with-param name="pad" select="'3'"/>
</xsl:apply-templates>
</xsl:template>
<xsl:template match="automaton/state">
<xsl:param name="pad"/>
<xsl:text> </xsl:text>
<h3>
<a>
<xsl:attribute name="name">
<xsl:value-of select="concat('state_', @number)"/>
</xsl:attribute>
</a>
<xsl:text>state </xsl:text>
<xsl:value-of select="@number"/>
</h3>
<xsl:text> </xsl:text>
<p class="pre">
<xsl:apply-templates select="itemset/item">
<xsl:with-param name="pad" select="$pad"/>
</xsl:apply-templates>
<xsl:apply-templates select="actions/transitions">
<xsl:with-param name="type" select="'shift'"/>
</xsl:apply-templates>
<xsl:apply-templates select="actions/errors"/>
<xsl:apply-templates select="actions/reductions"/>
<xsl:apply-templates select="actions/transitions">
<xsl:with-param name="type" select="'goto'"/>
</xsl:apply-templates>
<xsl:apply-templates select="solved-conflicts"/>
</p>
</xsl:template>
<xsl:template match="actions/transitions">
<xsl:param name="type"/>
<xsl:if test="transition[@type = $type]">
<xsl:text> </xsl:text>
<xsl:apply-templates select="transition[@type = $type]">
<xsl:with-param name="pad">
<xsl:call-template name="max-width-symbol">
<xsl:with-param name="node" select="transition[@type = $type]"/>
</xsl:call-template>
</xsl:with-param>
</xsl:apply-templates>
</xsl:if>
</xsl:template>
<xsl:template match="actions/errors">
<xsl:if test="error">
<xsl:text> </xsl:text>
<xsl:apply-templates select="error">
<xsl:with-param name="pad">
<xsl:call-template name="max-width-symbol">
<xsl:with-param name="node" select="error"/>
</xsl:call-template>
</xsl:with-param>
</xsl:apply-templates>
</xsl:if>
</xsl:template>
<xsl:template match="actions/reductions">
<xsl:if test="reduction">
<xsl:text> </xsl:text>
<xsl:apply-templates select="reduction">
<xsl:with-param name="pad">
<xsl:call-template name="max-width-symbol">
<xsl:with-param name="node" select="reduction"/>
</xsl:call-template>
</xsl:with-param>
</xsl:apply-templates>
</xsl:if>
</xsl:template>
<xsl:template match="item">
<xsl:param name="pad"/>
<xsl:param name="prev-rule-number"
select="preceding-sibling::item[1]/@rule-number"/>
<xsl:apply-templates
select="key('bison:ruleByNumber', current()/@rule-number)"
>
<xsl:with-param name="itemset" select="'true'"/>
<xsl:with-param name="pad" select="$pad"/>
<xsl:with-param name="prev-lhs"
select="key('bison:ruleByNumber', $prev-rule-number)/lhs[text()]"
/>
<xsl:with-param name="point" select="@point"/>
<xsl:with-param name="lookaheads">
<xsl:apply-templates select="lookaheads"/>
</xsl:with-param>
</xsl:apply-templates>
</xsl:template>
<xsl:template match="rule">
<xsl:param name="itemset"/>
<xsl:param name="pad"/>
<xsl:param name="prev-lhs"/>
<xsl:param name="point"/>
<xsl:param name="lookaheads"/>
<xsl:if test="$itemset != 'true' and not($prev-lhs = lhs[text()])">
<xsl:text> </xsl:text>
</xsl:if>
<xsl:if test="$itemset != 'true'">
<a>
<xsl:attribute name="name">
<xsl:value-of select="concat('rule_', @number)"/>
</xsl:attribute>
</a>
</xsl:if>
<xsl:text> </xsl:text>
<xsl:choose>
<xsl:when test="$itemset = 'true'">
<a>
<xsl:attribute name="href">
<xsl:value-of select="concat('#rule_', @number)"/>
</xsl:attribute>
<xsl:call-template name="lpad">
<xsl:with-param name="str" select="string(@number)"/>
<xsl:with-param name="pad" select="number($pad)"/>
</xsl:call-template>
</a>
</xsl:when>
<xsl:otherwise>
<xsl:call-template name="lpad">
<xsl:with-param name="str" select="string(@number)"/>
<xsl:with-param name="pad" select="number($pad)"/>
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
<xsl:text> </xsl:text>
<!-- LHS -->
<xsl:choose>
<xsl:when test="$itemset != 'true' and $prev-lhs = lhs[text()]">
<xsl:call-template name="lpad">
<xsl:with-param name="str" select="'|'"/>
<xsl:with-param name="pad" select="number(string-length(lhs[text()])) + 2"/>
</xsl:call-template>
</xsl:when>
<xsl:when test="$itemset = 'true' and $prev-lhs = lhs[text()]">
<xsl:call-template name="lpad">
<xsl:with-param name="str" select="'|'"/>
<xsl:with-param name="pad" select="number(string-length(lhs[text()])) + 2"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<span class="i">
<xsl:value-of select="lhs"/>
</span>
<xsl:text> →</xsl:text>
</xsl:otherwise>
</xsl:choose>
<!-- RHS -->
<xsl:for-each select="rhs/*">
<xsl:if test="position() = $point + 1">
<xsl:text> </xsl:text>
<span class="point">.</span>
</xsl:if>
<xsl:apply-templates select="."/>
<xsl:if test="position() = last() and position() = $point">
<xsl:text> </xsl:text>
<span class="point">.</span>
</xsl:if>
</xsl:for-each>
<xsl:if test="$lookaheads">
<xsl:value-of select="$lookaheads"/>
</xsl:if>
<xsl:text> </xsl:text>
</xsl:template>
<xsl:template match="symbol">
<xsl:text> </xsl:text>
<xsl:choose>
<xsl:when test="name(key('bison:symbolByName', .)) = 'nonterminal'">
<span class="i"><xsl:value-of select="."/></span>
</xsl:when>
<xsl:otherwise>
<b><xsl:value-of select="."/></b>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="empty">
<xsl:text> %empty</xsl:text>
</xsl:template>
<xsl:template match="lookaheads">
<xsl:text> [</xsl:text>
<xsl:apply-templates select="symbol"/>
<xsl:text>]</xsl:text>
</xsl:template>
<xsl:template match="lookaheads/symbol">
<xsl:value-of select="."/>
<xsl:if test="position() != last()">
<xsl:text>, </xsl:text>
</xsl:if>
</xsl:template>
<xsl:template match="transition">
<xsl:param name="pad"/>
<xsl:text> </xsl:text>
<xsl:call-template name="rpad">
<xsl:with-param name="str" select="string(@symbol)"/>
<xsl:with-param name="pad" select="number($pad) + 2"/>
</xsl:call-template>
<xsl:choose>
<xsl:when test="@type = 'shift'">
<a>
<xsl:attribute name="href">
<xsl:value-of select="concat('#state_', @state)"/>
</xsl:attribute>
<xsl:value-of select="concat('shift, and go to state ', @state)"/>
</a>
</xsl:when>
<xsl:when test="@type = 'goto'">
<a>
<xsl:attribute name="href">
<xsl:value-of select="concat('#state_', @state)"/>
</xsl:attribute>
<xsl:value-of select="concat('go to state ', @state)"/>
</a>
</xsl:when>
</xsl:choose>
<xsl:text> </xsl:text>
</xsl:template>
<xsl:template match="error">
<xsl:param name="pad"/>
<xsl:text> </xsl:text>
<xsl:call-template name="rpad">
<xsl:with-param name="str" select="string(@symbol)"/>
<xsl:with-param name="pad" select="number($pad) + 2"/>
</xsl:call-template>
<xsl:text>error</xsl:text>
<xsl:text> (</xsl:text>
<xsl:value-of select="text()"/>
<xsl:text>)</xsl:text>
<xsl:text> </xsl:text>
</xsl:template>
<xsl:template match="reduction">
<xsl:param name="pad"/>
<xsl:text> </xsl:text>
<xsl:call-template name="rpad">
<xsl:with-param name="str" select="string(@symbol)"/>
<xsl:with-param name="pad" select="number($pad) + 2"/>
</xsl:call-template>
<xsl:if test="@enabled = 'false'">
<xsl:text>[</xsl:text>
</xsl:if>
<xsl:choose>
<xsl:when test="@rule = 'accept'">
<xsl:text>accept</xsl:text>
</xsl:when>
<xsl:otherwise>
<a>
<xsl:attribute name="href">
<xsl:value-of select="concat('#rule_', @rule)"/>
</xsl:attribute>
<xsl:value-of select="concat('reduce using rule ', @rule)"/>
</a>
<xsl:text> (</xsl:text>
<xsl:value-of
select="key('bison:ruleByNumber', current()/@rule)/lhs[text()]"
/>
<xsl:text>)</xsl:text>
</xsl:otherwise>
</xsl:choose>
<xsl:if test="@enabled = 'false'">
<xsl:text>]</xsl:text>
</xsl:if>
<xsl:text> </xsl:text>
</xsl:template>
<xsl:template match="solved-conflicts">
<xsl:if test="resolution">
<xsl:text> </xsl:text>
<xsl:apply-templates select="resolution"/>
</xsl:if>
</xsl:template>
<xsl:template match="resolution">
<xsl:text> Conflict between </xsl:text>
<a>
<xsl:attribute name="href">
<xsl:value-of select="concat('#rule_', @rule)"/>
</xsl:attribute>
<xsl:value-of select="concat('rule ',@rule)"/>
</a>
<xsl:text> and token </xsl:text>
<xsl:value-of select="@symbol"/>
<xsl:text> resolved as </xsl:text>
<xsl:if test="@type = 'error'">
<xsl:text>an </xsl:text>
</xsl:if>
<xsl:value-of select="@type"/>
<xsl:text> (</xsl:text>
<xsl:value-of select="."/>
<xsl:text>). </xsl:text>
</xsl:template>
<xsl:template name="max-width-symbol">
<xsl:param name="node"/>
<xsl:variable name="longest">
<xsl:for-each select="$node">
<xsl:sort data-type="number" select="string-length(@symbol)"
order="descending"/>
<xsl:if test="position() = 1">
<xsl:value-of select="string-length(@symbol)"/>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:value-of select="$longest"/>
</xsl:template>
<xsl:template name="lpad">
<xsl:param name="str" select="''"/>
<xsl:param name="pad" select="0"/>
<xsl:variable name="diff" select="$pad - string-length($str)" />
<xsl:choose>
<xsl:when test="$diff < 0">
<xsl:value-of select="$str"/>
</xsl:when>
<xsl:otherwise>
<xsl:call-template name="space">
<xsl:with-param name="repeat" select="$diff"/>
</xsl:call-template>
<xsl:value-of select="$str"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="rpad">
<xsl:param name="str" select="''"/>
<xsl:param name="pad" select="0"/>
<xsl:variable name="diff" select="$pad - string-length($str)"/>
<xsl:choose>
<xsl:when test="$diff < 0">
<xsl:value-of select="$str"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$str"/>
<xsl:call-template name="space">
<xsl:with-param name="repeat" select="$diff"/>
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="space">
<xsl:param name="repeat">0</xsl:param>
<xsl:param name="fill" select="' '"/>
<xsl:if test="number($repeat) >= 1">
<xsl:call-template name="space">
<xsl:with-param name="repeat" select="$repeat - 1"/>
<xsl:with-param name="fill" select="$fill"/>
</xsl:call-template>
<xsl:value-of select="$fill"/>
</xsl:if>
</xsl:template>
</xsl:stylesheet>